With respect, Elizabeth, your personal assessment of the test based on your singular personal experience and self-analysis does not invalidate the test, or even cast suspicion on its scientific credibility.

The test is based on surveys conducted by trained researchers with dozens (perhaps thousands) of test takers, and the validity of the test has already been scientifically established.

In any case, one's own personal experience with a respected scientific test is not a reason to dismiss the test as "almost totally useless".

It would be a reason for trained researchers to treat the singular, self-evaluated, non-conforming result as "almost totally useless", however.